24AA1025-I/P

Memory IC Overview

The Microchip Technology 24AA1025-I/P is a 1-Mbit (128K x 8) serial EEPROM featuring an I²C-compatible 2-wire interface. It operates within a voltage range of 1.7V to 5.5V and supports clock frequencies up to 400 kHz in industrial applications. The device utilizes a PDIP-8 package with through-hole mounting. Key electrical parameters include a maximum read current of 450 µA, standby current of 5 µA, and write cycle time of 5 ms. It offers hardware write protection, Schmitt trigger inputs for noise suppression, and data retention exceeding 200 years.

Memory IC Feature Summary

• Supports cascading up to four devices on the same bus using configurable chip select pins A0 and A1.
• Includes a 128-byte page write buffer to optimize write throughput.
• Features hardware write protection via the WP pin to inhibit array writes when tied high.
• Incorporates Schmitt trigger inputs and output slope control for enhanced noise immunity.

Memory IC Applications

• Personal communications systems requiring non-volatile data storage
• Data acquisition systems needing low-power memory solutions
• Industrial control applications utilizing I²C communication protocols

Memory IC Procurement Notes

Verify that the ordering suffix matches the required specifications: 'I' indicates Industrial temperature range (-40°C to +85°C), and '/P' denotes the 8-lead PDIP package. Confirm RoHS compliance status as specified in the datasheet. Ensure the application design accounts for the mandatory VCC connection to the A2 pin for proper device operation.

Memory IC Selection Notes

Select this component for designs requiring 1-Mbit capacity with I²C connectivity. The 24AA1025 is suitable for low-voltage environments starting at 1.7V. Consider the 128-byte page buffer for efficient bulk data writing. Verify that the system bus capacitance and pull-up resistor values align with the 400 kHz clock frequency requirements.

Memory IC Part Context

This part belongs to the 24XX1025 family of serial EEPROMs, which also includes the 24LC1025 and 24FC1025 variants. These devices share identical functional architectures but differ in operating voltage ranges and maximum clock frequencies. The 24AA1025 specifically targets industrial applications with a broad voltage supply capability.

Memory IC Replacement Considerations

The 24LC1025 serves as a functional substitute but requires a minimum supply voltage of 2.5V compared to the 24AA1025's 1.7V minimum. The 24FC1025 offers higher speed capabilities up to 1 MHz but has a different voltage specification. Package variations such as SOIJ or SOIC are available under different suffixes.